“Conor Lamb's win proves that Pennsylvanians want leaders who put the lives of people ahead of party politics. Conor will fight for quality and affordable health care, family sustaining jobs, to rebuild our infrastructure, and to combat the heroin and opioid epidemic. I'm thrilled that Conor will continue to be an incredible partner to me and to the people of western Pennsylvania in Congress.

“Every Pennsylvanian who cast a vote for Conor Lamb, every activist who knocked on a door or called a neighbor, and every supporter who chipped in to fuel this campaign should be so proud of what they have achieved. Congratulations to Conor, his supporters, and the people of western Pennsylvania on their win.”

Pittsburgh Mayor Bill Peduto also congratulated Lamb, tweeting, “You ran a campaign you should be proud of & I look forward to working with you for the betterment of SW PA.”

Congratulations to Congressman-Elect @ConorLambPA - you ran a campaign you should be proud of & I look forward to working with you for the betterment of SW PA.

The seat opened in October when longtime representative Tim Murphy resigned amid a scandal.

The district, which stretches through parts of Greene, Allegheny, Washington and Westmoreland counties, could change by May after the state Supreme Court threw out the electoral map in January, saying it was unconstitutional.

The court issued a new map intended to take effect by the May primaries, although Republicans have challenged that map in court.